1、Single Mode Fiber Bend Requirements in the Data Center 2Copyright 2025 AFL.All rights reserved.This white paper is the frst in a series aimed at clarifying the technical nuances of deploying single-mode optical fber in modern,large data centers,including large enterprises,co-location facilities,hype

2、rscale environments,and AI-specifc data centers.The paper examines the advantages of different optical fber constructions,common cable designs and routing scenarios,and bend performance specifcations within data centers.Future white papers in this series will explore:-The signifcance of micro-bendin

3、g in deploying ultra-high fber count cables -The impact of Mode Field Diameter(MFD)variability on optical fber network testing and operations Alan KeizerSenior Technology Advisor,AFLKeith SullivanDirector of Stategic Innovation,AFLPaige JamesDesign Manager,AFLBen AthertonTechnical Author,AFL Contrib

4、utorsPrologue3Copyright 2025 AFL.All rights reserved.3Throughout this white paper,we will focus on two specifc ITU-T recommendations:ITU-T G.652:Characteristics of a single-mode optical fber and cable ITU-T G.657:Characteristics of a bending-loss insensitive single-mode optical fber and cable The IT

5、U-T G.652 recommendation specifes the mechanical,geometric,and transmission attributes of single-mode optical fber and cable with a zero-dispersion wavelength around 1310nm.Initially optimized for transmission in the 1310nm wavelength region(Original Band or O-Band),this recommendation is also appli

6、cable for use in the 1550nm(Conventional Band or C-Band)and 1625nm(Long Band or L-Band)regions.G.652 includes four attribute tables for different transmission applications.Table 4,which contains G.652.D attributes,is recognized as the industry standard for high bit-rate applications in both telecom